A New Lessepsian Mollusc Hypselodoris Infucata (Ruppell & Leuckart, 1828) (Gastropoda: Nudibranchia) for the Coasts of Turkey

Turk J Zool 25 (2001) 27-30 © T†BÜTAK

A New Lessepsian Mollusc Hypselodoris infucata (Ruppell & Leuckart, 1828) (Gastropoda: Nudibranchia) for the Coasts of Turkey

Cem ‚EVÜK ‚ukurova University, Faculty of Fisheries, Department of Marine Biology, 01330 BalcalÝ, Adana - TURKEY Bilal …ZT†RK Ege University, Faculty of Fisheries, Department of Hydrobiology, 35100 Bornova, Izmir - TURKEY

Received: 28.04.2000

Abstract: In this study, Hypselodoris infucata, which is reported only from Israeli waters, is reported for the first time on the East- ern Mediterranean coasts of Turkey, and its morphology and geographic distribution are described.

Key Words: Mollusca, Gastropoda, Opisthobranchia, Nudibranchia, Hypselodoris infucata

TŸrkiye KÝyÝlarÝndan Yeni KayÝt Bir Lessepsiyen TŸr: Hypselodoris infucata (Ruppell & Leuckart, 1828) (Gastropoda: Nudibranchia)

…zet: Bu •alÝßmada, TŸrkiye KÝyÝlarÝndan ilk defa rapor edilmekte olan ve daha šnce Akdeniz'de, sadece Üsrail KÝyÝlarÝndan bilinen Hypselodoris infucataÕnÝn morfolojik šzellikleri ve coÛrafik daÛÝlÝmÝ incelenmißtir.

Anahtar SšzcŸkler: Mollusca, Gastropoda, Opisthobranchia, Nudibranchia, Hypselodoris infucata

Introduction study, Hypselodoris infucata (Figure 1) had not been Since the opening of the Suez Canal in 1869, a num- recorded along the coasts of Turkey. ber of marine animals have been given the opportunity to migrate from the Red Sea through the Suez Canal north- Materials and Methods ward to the Mediterranean (Lessepsian migration) and Four individuals of H. infucata were collected on June from the Mediterranean southward to the Red Sea (Anti- th lessepsian migration). 12 , 1999, in the YumurtalÝk Bight (Figure 2) of Isk- enderun Bay on the rocky bottom at 1 m depth. Several reports dealing with migration of Indo-Pacific Mollusca into the Mediterranean Sea have been published Identification and systematic classification of the during this century by Tillier and Bavay (1), Tomlin (2), species were carried out according to Vietti et al. (20) and G. Haas (3), Ghisotti (4), Barash and Danin (5-8), and Sabelli et al. (21). Mienis and Gat (9). Most lessepsian molluscs were recorded in the Eastern Mediterranean with only a few Results and Discussion penetrating the Western Mediterranean (8). Hypselodoris infucata was reported for the first time Falchi (10), Demir (11), Kinzelbach (12), Lindner by Barash and Danin (5) from the Mediterranean coasts (13), Enzenrob and Enzenrob (14), Niederhšfer et al. of Israel with the name Glossadoris runcinata but after- (15), Tringali and Villa (16), Micali and Palazzi (17), Engl wards it was reported as Hypselodoris infucata for the (18), and Buzzurro and Greppi (19) studied the lessep- same area by Mienis and Gat (9). Hypselodoris infucata sian molluscs along the Turkish coasts. Until the present individuals have been collected from the Turkish coasts

27 A New Lessepsian Mollusc Hypselodoris infucata (Ruppell & Leuckart, 1828) (Gastropoda: Nudibranchia) for the Coasts of Turkey

Figure 1. General view of Hypselodoris infucata.

Figure 2. Map showing the locality Where H. infucata was found. for the first time in YumurtalÝk Bight of Iskenderun Bay Genus: Hypselodoris Stimpson,1855 in this study. - Hypselodoris infucata (Rueppell & Leuckart, 1831) Systematic of the species: [Doris] Phylum: Mollusca Cuvier, 1797 Main Synonyms: Doris infucata Ruppell and Leuckart, Classis: Gastropoda Cuvier, 1797 1828; Doris diardi Kelaart, 1859; Chromodoris runcinata Bergh, 1875; Chromodoris semperi Bergh, 1877; Subclassis: Opistobranchia Milne-Edwards, 1848 Glossodoris infucata OÕDonoghue, 1929; Glossodoris run- Ordo: Nudibranchia Blainville, 1814 cinata (Berg, 1877). Engel and Eeken, (1962). Familia: Chromodorididae Bergh, 1891

28 C. ‚EVÜK, B. …ZT†RK

Description: The ground colour of the back appears can species living in the Erythraean subregion are brought green with a complex patched pattern. The notal edge is into the Mediterranean by the sea currents. It is very pale blue with a line of yellow and dark blue spots. The unlikely that the species from subregions that are remote same spots are scattered over the back. The rhinophore from the Mediterranean should be able to migrate during has a short white stalk and a bright orange club. The gills larval stages, since the life span of the larvae is rather are white and lined with orange while the oral tentacles short. It is more reasonable to assume that the migrants sometimes have orange tips. from the distant subregions were transported during the adult stage by carriers (ships, fish, etc.) to the localities Habitat: Shallow waters, rocky bottoms where they were collected in the Mediterranean. Distribution: Indo-Pacific: Gulf of Suez- Et Tur, Gulf of Elat (Aqaba)- Elat, Red Sea, East Africa- Zanzibar, Dar Of course, the presence of H. infucata in the study Es Salaam, South Africa, Philippine Is., South Australia, area does not mean that they inhabit the Mediterranean New Caledonia, Fiji, Hawaii Is. (22). coasts of Turkey. In order to say that one species is well- established in a particular area, this species must live per- The currents that occur in the northern end of the manently in this new habitat and reproduce there (23). Suez Canal move northwards along the coasts of Egypt, Israel, Lebanon and Syria, and dissolve just after reaching It should not be forgotten that newcomer species may the Turkish coasts (19). As a consequence, most of the cause some ecological problems in the new habitat. lessepsian molluscs have been reported to occur on the Therefore, more detailed ecological studies should be car- coasts of the countries mentioned above. Although some ried out on newcomer species. of the lessepsian species found on the coast of Israel also could be found on the Turkish coast without occurring in Acknowledgement any locations in the area, some species are only in the Turkish waters. The authors would like to thank Prof. Henk Miens (Hebrew University, Jerusalem, Israel) for supplying There is insufficient information about the distribu- them with information about the distribution of tion of lessepsian molluscs in the Mediterranean. It may Hypselodoris infucata in the Mediterranean. be surmised that the pelagic larvae of the benthic mollus-

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29 A New Lessepsian Mollusc Hypselodoris infucata (Ruppell & Leuckart, 1828) (Gastropoda: Nudibranchia) for the Coasts of Turkey

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